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		<a href="1.html" target="_blank">练习1：李清照的词</a><br/>
		<a href="2.html" target="_blank">练习2：李清照简介</a><br/>
		<a href="3.html" target="_blank">练习3：京东新闻资讯页</a><br/>
        <a href="4.html" target="_blank">练习4：京东快速购物导航</a><br/>
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